Calendar entry from BB added to different user's Outlook

We are running BES 4.1 in an Exchange 2003 environment. My CEO's calendar entries into his Bold (AT&T) is wireless syncing into MY Outlook calendar. Doesn't show up in his at all. Entries made directly into his Outlook doesn't appear in mine. Has anyone seen this type of issue before? There have been zero changes in permissions (in fact I removed myself from accessing his mailbox completely) so mailbox rights look correct. His profile on BES was deleted and re-added. Any other suggestions?